(717d) Effect of Temperature and Heating Rate on Heel Build-up during Microwave Regeneration Conference: AIChE Annual MeetingYear: 2015Proceeding: 2015 AIChE Annual MeetingGroup: Separations DivisionSession: Adsorbent Materials for Sustainable Energy and Chemicals Time: Thursday, November 12, 2015 - 4:15pm-4:35pm Authors: Fayaz, M., University of Alberta Niknaddaf, S., University of Alberta Jahandar Lashaki, M., University of Alberta Shariaty, P., University of Alberta Hashisho, Z., University of Alberta Phillips, J. H., Ford Motor Company Anderson, J. E., Ford Motor Company Nichols, M., Ford Motor Company This study investigates the effect of regeneration temperature and heating rate on irreversible adsorption of organic vapors typically emitted from automotive painting booths. Two types of beaded activated carbons (BAC), with different porosities (microporous versus mesoporous) were loaded with 1, 2, 4-trimethylbenzene and regenerated at two regeneration temperatures (288 and 400 oC) and at different heating rates (25, 50, 100, and 150 oC/min). The results showed that for the higher regeneration temperature (400 oC), increasing heating rate increased heel build-up by as much as 105% and 189% for the microporous and mesoporous BACs, respectively. The elevated heel formation at higher heating rates could be due to adsorbate coking as a result of exposure to high temperature. Conversely, for the lower regeneration temperature (288 oC), increasing the heating rate did not significantly affect the amount of heel build-up (< 15% and < 5% increase for microporous and mesoporous BACs, respectively). This could be because the lower regeneration temperature provided insufficient conditions for coking. The results from this study indicate that the heating rate during desorption could be optimized to allow fast desorption with minimal adsorbate decomposition.